Question

【题目】—Is Sam cleaning the room?—. He's making the bed.
A.Yes, he is
B.No, he isn't
C.Yes, she is
D.No, she isn't

Answer 1

【答案】B
【解析】问句是一般疑问句，主语 Sam 是男性，答句的主语应该用 he 来代替，排除选项C和D；根据后一句 He's making the bed.他正在铺床，可知没有在打扫房间，用否定回答，故选B。